Improvement in the manufacture of trunk-rollers



@uiten tetes genet- @frn [IARVY GRAY, CF BRISTOL, CONNECTICUT, ASSIGNCRTO ALBERT J, SES- v SIGNS, OF SAME PLACE.

Letters Patent No. 67,645, dated .August 13, 1867.

IMPROVEMENT IN THE MANUFACTURE 0l? TRUNK-R0 .LLERS.

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TO ALL WI-IOM IT MAY CONCERN:

Beit known that I, HARVY GRAY, of Bristol, in the county of Hartford, State of Connecticut, have invented a new and improved Mode of Making Trunk-Rollers; and I do hereby declare that the following is a full, clear, and exact description thereof, which )vill enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, making a part ofv this specification, in which- Figure 1 is a perspective view of my invention.

Figure 2 is a view of the rollerend pivot.

Figure 3 is a view ofthe pattern for the frame.

Figure 4 is a View of an ordinary trunk-roller.

My invention consists, first, of casting the frame of a trunk-roller around the ends of the pivot or wire on which the roller revolves; second, of making a small slot or groove on each side of the pattern of the frame, and placing the ends of the pivot or wire in ,the slots or grooves preparatory to moulding.

a designates the roller, and c designates the pivot or wire on which it revolves. After placing the roller a on the pivot or wire c, asv shown in g. 2, the ends of the wire or pivot c are placed in the slots or grooves Z (Z in the pattern, fig. 3, which is then ready'to mould. After the ilask is filled with sand and packed asin ordinary moulding, the pattern, fig. 3, is withdrawn, and Vthe roller a and pivot or wire c remain in the sand. A pair of small pincers made for the purpose is then extended into the print, from 4whiehithe pattern, fig. 3, is withdrawn, and the sand that filled the slots or grooves CZ d is depressed towards the roller a, leaving the print smooth and ready to east or pour. As the iron is poured into the mould, it forms around the ends of the wire or pivot c, i

and holds them firmly in their place. The frame 6 might be moulded in other ways and cast around the pivot or Wire c, and when inished be substantially the same. I

The ordinary mode of making trunk-rollers is to east the frame I), and then drill a hole on each side and rivet in the pivot or wire e. The frames being very thin, it is necessary to have them thoroughly annealed before drilling. It often happens that the holes in the frames are not drilled opposite each other, and consequently the pivot and roller stand ohliquely with the frame. The cheap help usually employed to rivet the frames break a large percentage of them. A great tension remains on many of those that are not broken, which causes them to break when fastened upon the trunk, By my invention I produce an article for trunk-rollers whereby all .the above objections are entirely overcome. It is made with much less labor than the ordinary roller-and (not being drilled) of iron of a much cheaper and tougher grade. The iron being tougher and not' afterwards annealed, the frames are much less liable to break.

I do not claim casting other articles of iron around a wire, neither do I claim any peculiar form or operation ofthe described roller, but what I claim as new, and desire to secure by 'Letters Patent, is-

As a new article of manufacture, a trunk-roller, with the frame I) cast around the ends of the pivot or wire e, substantially as described.

HARVY GRAY.

Witnesses CHARLES GRAY, JAMLs SHErAnD. 

